I was followed earlier this year by 2 guys who claimed they were lost and seeking the trailhead parking lot. They had no maps, no fluids, and smelled of alcohol.
I did have my 5" blade diving knife that I managed to get out of my pack and have available, especially when they dropped back behind me several times.
Anyway, I'm thinking about ordering a dagger (double edge) that has an almost 7" blade. States have different laws regarding carrying these knives and whether they should be made apparent (not concealed). I was thinking about attaching the sheath on my shoulder strap so as to be visible to someone and a deterrant.
Has anyone done this, or come across someone hiking that carried one?